A 3-way screwed ball valve is a type of valve with three ports that can direct flow in different directions. It is operated by rotating a ball with a hole in the middle, which aligns with the ports to control the flow.

The main configurations are "L" (or 90-degree) port and "T" (or 180-degree) port. The "L" port directs flow between two ports at a time, while the "T" port can connect all three ports or isolate one port while connecting the other two.

These valves are commonly used in applications requiring flow diversion, mixing, or fluid transfer between multiple paths, such as in chemical processing, water treatment, HVAC systems, and industrial automation.

Consider factors like the type of media, pressure and temperature ratings, valve material, flow configuration (L or T port), and connection type (e.g., threaded, flanged).

Common materials include stainless steel, brass, and PVC. Stainless steel is preferred for corrosive environments, brass for non-corrosive fluids, and PVC for lightweight and cost-effective solutions.

Installation involves aligning the valve with the piping system, applying thread sealant or Teflon tape to the male threads, and tightening the valve to the pipe using a wrench. Ensure the valve is oriented correctly according to the desired flow path.

Yes, 3-way ball valves can be equipped with actuators (electric or pneumatic) to allow for automated control, which is beneficial in remote or complex systems.

Advantages include versatility in flow control, the ability to divert or mix fluids, compact design, ease of operation, and reliable sealing properties.

Regular maintenance includes periodic inspection for leaks, ensuring the handle or actuator operates smoothly, cleaning the valve internals if necessary, and replacing worn-out seals or seats.

Pressure ratings vary by material and design but typically range from 150 PSI to 1000 PSI. Always check the manufacturer's specifications for the exact rating.

Yes, 3-way ball valves can handle both liquids and gases, provided they are constructed from materials compatible with the media and have the appropriate pressure and temperature ratings.

Common issues include leakage due to worn seals, improper installation leading to misalignment, difficulty in operation if the valve is not maintained, and corrosion or damage from incompatible media. Regular maintenance and proper selection for the application can mitigate these issues.